Alert archive / Kansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS Topeka, KS

February 28, 2012Osage County, Shawnee County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Feb 28, 2012, 9:03 PM CST for Osage County, Shawnee County, Kansas. It was in force for 42 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Feb 28, 2012, 9:03 PM CST (03:03 UTC)
Expired
Feb 28, 2012, 9:45 PM CST
In force
42 min
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Osage County, KS, Shawnee County, KS

The radar

The Topeka radar (KTWX), 51 km from the middle of the area, began a volume at 03:06 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Feb 28, 9:12 PM CSTHAIL 0.753 Ssw Auburn, KS
Feb 28, 9:15 PM CSTHAIL 0.887 Wsw Topeka, KS
Feb 28, 9:19 PM CSTTSTM WND GST 603 Sw Topeka, KSAT 29TH AND OAKLEY
Feb 28, 9:20 PM CSTTSTM WND GST 555 S Topeka, KSFORBES FIELD

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 28, 8:10 PM CSTTornado WatchSPC5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 3.1 hours before the alert went out and 2 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Topeka, KS at 00:00Z on 2012-02-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 37 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2012-02-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 427 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
37 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
482 m above ground
0-6 km bulk shear
72 kt
0-1 km storm-relative helicity
427 m²/s²
0-3 km storm-relative helicity
451 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

682 
WUUS53 KTOP 290303
SVRTOP
KSC139-177-290345-
/O.NEW.KTOP.SV.W.0005.120229T0303Z-120229T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
903 PM CST TUE FEB 28 2012

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN OSAGE COUNTY IN EAST CENTRAL KANSAS...
  SHAWNEE COUNTY IN EAST CENTRAL KANSAS...

* UNTIL 945 PM CST

* AT 902 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 11
  MILES WEST OF BURLINGAME...OR 6 MILES SOUTHEAST OF ESKRIDGE...
  MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BURLINGAME...
  DOVER...
  SCRANTON...
  AUBURN...
  CARBONDALE...
  TOPEKA...
  PAULINE...
  BERRYTON...
  RICHLAND...
  TECUMSEH...

THIS INCLUDES THE KANSAS TURNPIKE BETWEEN MILE MARKERS 156 AND 188.

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 349 AND 355.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. IF A TORNADO IS SPOTTED
ACT QUICKLY AND MOVE TO A BASEMENT OR SMALL INTERIOR ROOM.

PREPARE FOR LARGE HAIL...DAMAGING WINDS AND VERY HEAVY RAIN IF YOU
ARE IN THE PATH OF THIS STORM. FOR YOUR SAFETY...TAKE COVER INSIDE A
BUILDING NOW.

STAY TUNED TO WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE LATEST
SEVERE WEATHER INFORMATION.

&&

LAT...LON 3887 9550 3869 9594 3902 9595 3922 9571
      3921 9559 3907 9560 3905 9558 3907 9555
      3907 9551
TIME...MOT...LOC 0303Z 242DEG 43KT 3880 9601
WIND...HAIL 60MPH 1.00IN

$$

BLAIR

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 28, 6:04 PM CSTTornado WarningTOPRepublic20 min
Feb 28, 6:50 PM CSTSpecial Weather StatementTOPOttawa25 min
Feb 28, 7:16 PM CSTSevere Thunderstorm WarningTOPClay, Cloud, Washington44 min
Feb 28, 7:41 PM CSTSpecial Weather StatementTOPRepublic34 min
Feb 28, 7:57 PM CSTTornado WarningTOPMorris33 min
Feb 28, 8:11 PM CSTSpecial Weather StatementTOPMarshall34 min
Feb 28, 8:17 PM CSTSpecial Weather StatementTOPWashington28 min
Feb 28, 8:28 PM CSTSevere Thunderstorm WarningTOPLyon, Morris, Wabaunsee47 min
Feb 28, 8:48 PM CSTSpecial Weather StatementTOPMarshall27 min
Feb 28, 9:21 PM CSTSevere Thunderstorm WarningTOPDouglas, Jefferson39 min
Feb 28, 9:53 PM CSTSevere Thunderstorm WarningTOPDouglas, Franklin, Osage, Shawnee36 min
Feb 28, 9:58 PM CSTSevere Thunderstorm WarningTOPAnderson, Coffey, Franklin47 min
Feb 28, 10:10 PM CSTTornado WarningTOPDouglas14 min
Feb 29, 4:10 AM CSTRed Flag WarningTOPAnderson, Coffey, Dickinson, Lyon, Morris, Ottawa14 hr

Nearby

Severe Thunderstorm Warnings in Kansas, 2012Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.